DISSECTION OF THK PERINiEUM IN THE MALE. 



289 



ayer in the absence of macroscopic hairs and the presence of numerous 

 jreputial glands, which secrete a strong-smelling sebaceous material. 

 Phis material, together with shed epithelium, generally accumulates in 

 3onsiderable amount within the sheath, as the so-called smer/ma preputii. 



Fig. 40. 



General View (sejii-diaobammatic) of the Generative Organs or the Horse. 

 (Leisering and MUller.) 



1. Scrotum ; 2. Outer layer of the sheath ; 2'. Inner layer of the samp ; 2". Outer layer of the 

 prepuce proper ; 2'". Inner layer of the same ; 3. Left testicle included in the tunica vaginalis ; 

 -i. Left internal abdominal ring ; 4'. Vessels and nerves of the left spermatic cord ; 5 and 5'. Left 

 and right vasa defeventia, united by 6, a fold of peritoneum (Douglas' fold); 7. Left vesicula 

 seminalis; 8. Divided prostate gland; 9. Left Cowper's gland; 10. Urinary bladder; 11. Pelvic 

 part of the mesially divided urethra; 11'. Extra pelvic part of the same; 12. Glans penis; 13. 

 Left coi-pus cavemosum ; 13'. Its strong fibrous envelope ; 14. Left suspensory ligament of the 

 penis ; 15. Eectum ; 15'. The anus divided. 



The Prepuce (or inner prepuce) is a short tube, the entrance to 

 which lies a little within the orifice of the sheath. Like the latter, its 

 wall comprises two layers — an external and an internal. The former 

 is continuous posteriorly with the inner layer of the sheath, and similar 



